:root {
    --brand-blue: #1426a0;
    --page-background: #ffffff;
    --placeholder-background: #f3f5fb;
    --placeholder-line: #d7ddee;
}

* {
    box-sizing: border-box;
}

html {
    background: var(--page-background);
}

body {
    min-width: 320px;
    margin: 0;
    color: var(--brand-blue);
    background: var(--page-background);
    font-family: Georgia, "Times New Roman", "Yu Mincho", "YuMincho", serif;
}

img {
    display: block;
    max-width: 100%;
}

.home {
    width: min(100% - 48px, 1240px);
    margin: 0 auto;
    padding: clamp(42px, 5.5vw, 60px) 0 62px;
}

.image-frame {
    position: relative;
    overflow: hidden;
    margin: 0;
}

.image-frame::after {
    position: absolute;
    inset: 0;
    display: none;
    place-items: center;
    color: #7b86b2;
    border: 1px solid var(--placeholder-line);
    background:
        linear-gradient(135deg, transparent 49.8%, var(--placeholder-line) 50%, transparent 50.2%),
        linear-gradient(45deg, transparent 49.8%, var(--placeholder-line) 50%, transparent 50.2%),
        var(--placeholder-background);
    content: attr(data-placeholder);
    font-family: Arial, sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.18em;
}

.image-frame.is-missing::after {
    display: grid;
}

.logo-frame {
    width: clamp(126px, 10vw, 180px);
    aspect-ratio: 0.92;
    margin-inline: auto;
}

.logo {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.visual-frame {
    width: 100%;
    aspect-ratio: 1.955 / 1;
    margin-top: clamp(37px, 4vw, 44px);
}

.main-visual {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.primary-nav {
    display: grid;
    grid-template-columns: repeat(3, auto);
    justify-content: center;
    gap: clamp(52px, 7.2vw, 112px);
    margin-top: clamp(32px, 3.5vw, 39px);
}

.primary-nav a {
    position: relative;
    color: var(--brand-blue);
    font-size: clamp(1.45rem, 1.9vw, 2.25rem);
    line-height: 1.15;
    text-decoration: none;
    white-space: nowrap;
}

.primary-nav a::after {
    position: absolute;
    right: 0;
    bottom: -0.18em;
    left: 0;
    height: 1px;
    background: currentColor;
    content: "";
    opacity: 0;
    transform: scaleX(0.6);
    transition: opacity 180ms ease, transform 180ms ease;
}

.primary-nav a:hover::after,
.primary-nav a:focus-visible::after {
    opacity: 1;
    transform: scaleX(1);
}

.primary-nav a:focus-visible {
    outline: 2px solid currentColor;
    outline-offset: 7px;
}

@media (max-width: 720px) {
    .home {
        width: min(100% - 32px, 1240px);
        padding-top: 32px;
    }

    .primary-nav {
        grid-template-columns: repeat(2, auto);
        gap: 24px clamp(50px, 16vw, 90px);
    }
}

@media (max-width: 420px) {
    .primary-nav {
        gap: 22px 42px;
    }

    .primary-nav a {
        font-size: 1.25rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .primary-nav a::after {
        transition: none;
    }
}